Artificial tooth



NOV. 29, 1932. s, TRUSLER 1,889,301

ARTIFICIAL TOOTH Filed June 13, 1950 2 Sheets-Sheet l NOV. 29, 1932. 5 TRUSLER 1,889,301

ARTIFICIAL TOOTH Filed June 13, 1930 2 Sheets-Sheet 2 i z 5 w Inventor WWW/1% ,6. Trader A ltorney Patented Nov- 29, 1932 r PATENT OFFICE ram TRUSLER, or vnnnou, TEXAS ARTIFICIAL moo'rn .Application filediune 1s,

, This invention relates broadly toartificial teeth, and particularly to the attachment thereof to vulcanite or other dentures for constructing full or partial upper and lower 1 5 dentures. V I p It is also comprehended by. the present invention to'permit of such attaching means being used to advantage in crown and bridge work. i .10 Other objects and advantages of the inv vention will become apparent during a study of the followingdescription taken in connection with the accompanying drawings wherein j j 1 1 Figure 1 is a. vertical sectional view through an artificial tooth, showing one form of my attachment associated therewith. Fig. 2 is a bottom or inverted view in per spective of the backing plate and pin associated therewith, forming one partof the anchoring or attaching device as shown in Fig. 1. j

Fig. 3 is a detail sectional view taken substantiallyon the line 3-3 of Fig. 1.

Fig. 4: is a top plan view ofthe backing plate. i

Fig. 5 is a top plan view of the artificial tooth.

Fig. 6 is a perspective view of the tube forming part of the anchoring or attaching means'of said one embodiment of the invention. V l

Fig. 7 is a view somewhat in perspective showing another form of anchoring means, the partsbeing shown separated.

Fig. 8 is a view similar to Fig. 7 of still another form of anchoring device.

Fig. 9 is a detail View partly in section and partly in elevation with the parts of the anchoring device shown in 'Fig. 7 arranged in assembled relation. i

Fig. 10 is a view taken substantially rightangles to. Fig. 9.

Fig.11 is a detail sectional view through 1930. Serial, No. 460,985

a portion of a denture embodying the features of the present invention.

Fig. 12is an elevational view of a reinforcing plate forming part of the invention.

With reference more in detail to the draw- 5 ings, and with reference particularly to Figs. 1 to 6 inclusive, and Fig. 11, it will be seen that numeral 5 designates an artificial tooth provided with a vertical socket 6 opening inwardly fromthe top face of the tooth.

A backing plate 7 formed of any suitable material is adapted to conformably rest on the upper face of the tooth 5, and from the center of the plate 7 there projects a tapered pin 8 adapted to extend into the socket or re cess 6. On diametrically opposite sides thereof, adjacent itslower ends, the pin 8 is suitably notched as at 9.

Adapted to be arranged in the socket 6 is a metallic tube 10, open at its opposite ends, and-it will be seen thatthe tube tapers longitudinally and on diametrically opposite sides thereof is longitudinally split as at 11 to permit of expansion and contractionof the tube 10 in the socket6. The tube 10 fits in the upper end portion ofv the socket 6, and at its lower smallest end, the tube 10 is provided with an outstanding projection or flange 12.

In applying, the anchor or attachment to the tooth, the socket 6 is partially filled with cement or similar substance 13, after which the tube 10 is inserted in the socket and embedded within the cement 13. Next, the pin 8 is passed through the tube 10, so that the plate 7 rests upon the upper face of the tooth 5.. Gbviously, as the pin 8 passes through the tube 10, the slits 11 which provide for the tube 10 expansiblespring fingers is expanded so that the flanges 12 of the tube are pressed into the cement 13.

When the pin 8 ispassed through the tube 10 as far as possible, it will be seen that the said fingers of the tube 10 will be permitted in view of the notches 9 toslightly contract,

' so that the flanged lower edge of the tube rests on the shoulder 9 adjacent the lower end of the pin 8, which shoulder as is obvious is formed through the medium of the notches 9.

Such arrangement insures a positive and efiicient locking connection between the tooth 5 and the plate 7. The plate 7 on the top face thereof is provided with a plurality of upstanding headed studs 14. In securing the tooth 5 provided with my anchoring means to a suitable denture as suggested in Fig. 11, the headed studs are pressed into the lower edge of a vulcanite casing 15, the plate becoming embedded in the casing 15 as suggested.

The projections 14 are embedded in the vulcanite casing 15 when the same is in a pliable condition, and obviously, after proper casting and the vulcanite casing becomes "partly hardened, the studs 14 will be suitably anchored and embeddedwithin the casing, thus securing the tooth to the casing and providing for a strong denture, capable of withstanding the strain to which it may besubjected.

In this connection, it is also to be noted, that embedded within the casing 15 is an elongated plate l6 preferably of flexible material which is adapted to be bent around the front part of the denture. On one face thereof, the plate 16 is provided with a plurality of headed pins or proj ections17 which provide an anchorage for a suitable pink gum-like substance forming part of the finished'denture, the plate 16 I, being completely concealed by the applica- 35.

tion of such gum-likesubstance.

.The form of anchoring deviceas shown in Fig. 7 will'be' found to be a very'useful form of anchoring means for use in securing varied types, or'species of tooth, in a denture. In this connection, it will be seen that thisform 'of anchoring device comprises a substantially elongated backing plate 7a having a. pin or projection 8a extendingfrom one face thereof. The pin 8a is relatively flat, being somewhat rectangular in cross section. On opposite faces thereof, the pin 8a is provided with notches 9a forming at the lower end of the pin 8 on opposite sides thereof,'projections or shoulders 9".

Forming a part of this form of the invention, and corresponding to the tube 10 is an elongated metallic sleeve-like member 10a adapted to be embedded in cement in the socket of a tooth. The member 10a is adapted to receive the pin 8a, and said member 10a tapers vertically from its upper to its lower end to. provide inclined side walls. At each end thereof, the member 10a is slit as at 11a so that when the pin 8a 'is passed through the member 10a, the same will expand so that the flanges 12a on the lower edge of the member 10a will be embeddedin the cement in the socket of the tooth."

When the parts are in assembled relation ifor anchoring the tooth to a denture, it is apface plate 76 having a rounded tapered pin 8?) projecting from one face thereof. At its smallest or free end, the'pin 8b is provided with a disk-like head 18.

Forcooperation with the pin 8?) is an elongated tapered tube 10?) which like tube 10 is slit: on -diametrically opposite sides thereof to provide expansible spring fingers. The slits being designated by reference characters llb. w

, Likewise the tube 106 at its lower end is provided with an outstanding flange 12?), which when the parts arein engagement, one with the other, will rest on the upper face of the head 18 of the pin 86. Obviously as the pin 8?; is .passed through the sleeve 10?), the head 18 will act to expand the tube 10?) in the same manner as the shoulder 9 acts to expand the tube 10.

1 By using this method of anchorage as suggested in either form of the invention, it will be'found that the socket 6 in the tooth may not be so deep or extend so far into the porcelain which heretofore has been the case, resulting in the weakening. of the tooth.

Furthermore, such an anchoring means as comprehended by the present invention will eliminate all possibility of the pin of the anchoring member projecting through the porcelain of the tooth onto the occlusial surface which of course, makes for a bad appearance, and in addition, the fluid of the mouth would tend to dissolve the cement from around the pin, thus weakening the'connection around the tooth which would be liable to work free of the anchor.

Furthermore, it will be appreciated that an anchoring means of this character which permits of the socket in the tooth terminating inwardly at its closed end of the tooth, makes for a much stronger and sanitary denture.

Even though I have herein shown and described the preferred embodiment of my invention, it is to be understood that the same of, a backing plate adapted to be secured to the tooth, a pin projecting from said backing plate. a tube arranged in the socket of said tooth, said pin adapted to extend into said socket thru said tube, shoulders formed on saidpin adjacent the free end of the pin for engaging the inner edge of said tube, said tube at said inner end being slit, said pin adapted to expand said tube in said socket when said pin is passed through said tube, cement in said socket about said tube, and said tube at said inner end provided with outstanding flanges adapted to be embedded in the cement upon expansion of said tube.

In testimony whereof I aflix my signature.

FRANK S. TRUSLER. 

